docs: def top(self, topn=10):
          """
          Get a list of the top ``topn`` features in this :class:`.Feature`\.
  
          Examples
          --------
  
          .. code-block:: python
  
          >>> myFeature = Feature([('the', 2), ('pine', 1), ('trapezoid', 5)])
          >>> myFeature.top(1)
          [('trapezoid', 5)]
  
          Parameters
          ----------
          topn : int
  
          Returns
          -------
          list
          """
          return [self[i] for i in argsort(list(zip(*self))[1])[::-1][:topn]]